A concussion is a traumatic brain injury that alters the way your brain functions. Effects are usually temporary but can include headaches and problems with concentration, memory, balance and coordination.
Although concussions are usually caused by a blow to the head, they can also occur when the head and upper body are violently shaken. These injuries can cause a loss of consciousness, but most concussions do not. Because of this, some people have concussions and don't realize it.
Concussions are common, particularly if you play a contact sport, such as football. But every concussion injures your brain to some extent. This injury needs time and rest to heal properly. Most concussive traumatic brain injuries are mild, and people usually recover fully.
The signs and symptoms of a concussion can be subtle and may not be immediately apparent. Symptoms can last for days, weeks, or even longer.
Common symptoms after a concussive traumatic brain injury are headache, loss of memory (amnesia) and confusion. The amnesia, which may or may not follow a loss of consciousness, usually involves the loss of memory of the event that caused the concussion.
Signs and symptoms of a concussion may include:
Some symptoms of concussions may be immediate or delayed in onset by hours or days after injury, such as:
Head trauma is very common in young children. But concussions can be difficult to recognize in infants and toddlers because they may not be able to describe how they feel. Nonverbal clues of a concussion may include:
No one should return to play or vigorous activity while signs or symptoms of a concussion are present.
Experts recommend that an athlete with a suspected concussion not return to play until he or she has been medically evaluated by a health care professional trained in evaluating and managing concussions. Children and adolescents should be evaluated by a health care professional trained in evaluating and managing pediatric concussions.
Experts also recommend that adult, child and adolescent athletes with a concussion not return to play on the same day as the injury.
Concussion Recognition Pocket Tool
Concussion Guidelines for Coach/Trainer Part 1
Concussion Guidelines for Coach/Trainer Part 2
Concussion Guidelines for Return to Play Part 1
Concussion Guidelines for Return to Play Part 2